Loom-shuttle.



E. S. STIMPSON.

LOOM SHUTTLE.

, APPLICATION FILED AUG-6, 1914.

15%1Qfi?& v Patented Jan.16,'1917.

2 SHEETS-SHEET I.

mwsnn s. srmson', or nornnann, nassacnusn'r'rs, assrenon, BY nnsn'n Assren was, no nnarnn conrorm'rronr or ronrnann, name, a conronarron on LOOK-SHUTTLE.

Specification of Letters Patent.

Patented Jan. 16, 191?.

Application flied August 6, 1914.. Serial No. 855,455.

To all whom it may concern Be it known that T, EDWARD S. STIMPSON, of Hopedale, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Loom- Shuttles, of which the following is a specification.

The present invention relates to automatically threading shuttles of the character that are used in weft replenishing looms wherein the replenishment is efiected by ejecting the spent weft carrier from the shuttle and substituting in its place another filled weft carrier.

The object of the present improvements is to render diflicult the unthreading of the shuttle after it has once been threaded.

The improvements are illustrated in the accompanying drawings, in which- Figure 1 is a plan view of the eye end of the shuttle. Fig. 2-is a transverse section in the plane indicated by the line 2-2 in Fig. i. Fig. 3 is a longitudinal section with parts of the shuttle body broken away showing'the threader in side elevation. Fig. 4: is a perspective view of the thread deflector. Fig. 5 is a indicated by the line 5-5 in Fig. 3. Fig. 6

1 is a. transverse section in the same plane as showing the inner guard in a reverse 7 is a transverse section in the line 7--7 in is that which is adjoining the shuttle chamher which contains the weft carrier, and the outer end of the thread passage is that which communicates with the delivery passage L near the tip of the shuttle at the eye end. Accordingly, outwardly is toward the tip of the shuttle at the eye end; inwardly is toward the shuttle chamber; forwardly is toward the eye side of the shuttle; and rearwardly is toward the rear side of the shuttle.

The present improvements are shown as applied to an automatically threading shuttle whichvis substantially similar to that shown in United States Letters Patent No.

933,497, September 7, 1909. The shuttle A horizontal section in the plane sage,

has a threading chamber B at its eye end in which is located a sheet metal threader. As 111 said patent this sheet metal threader comprises separated vertical side walls C, D, with a threading passage E, between them; a beak F, atthe outer end or the thread passage which is located at the front-or eye side of said passage and extends outwardlybe yond and overhangs the outer end ofthe threading passage and directs the thread to the slotted eye G, of the shuttle; a guard H, at the outer end of the threading passage which extends forwardly from the rear of the threading passage and overhangs the beak F; and aguard T, at the inner end or" the threading passage which retains the thread in the threading passage between the two side walls of the threader. The wall 6, is at the eye or front side of the shuttle and the wall D, is at the opposite or rear side. The threader is held in place by means of a transverse bolt J, which extends through apertures in the shuttle body and in the walls of the threader, this bolt screwing into a nut K, countersunk in the rear side of the shuttle body, as shown in Fig. 2. The beak F, has'a downwardly and inwardly inclined edge a, which directs the thread from the delivery passage L, to the eye G, and at the extreme lower end of this inclined edge is a heel b, which constitutes a portion of the outer wall of the eye; In all of these re spects the construction is substantially as shown in said Patent No. 933,497.

The present improvements are three in number and relate to the loop retainer R, the shoulder T, and the thread deflector S. These will be separately described.

As shown in the aforesaid Patent No. 933,497, the inner edge of the outer guard (corresponding to the herein illustrated guard H) is forwardly and outwardly inclined with the result that if a loop of the thread is thrown upwardly, as sometimes happens, due probably to the sudden stoppage of the shuttle, such loop may be guided outwardly thereby occasionally unthreading the shuttle and sometimes causing thread breakage. In accordance with the present invention the inner edge R, of the guard H, extends abruptly to the axis of the threading passage E, and across and'over said passo that it catches and retains the upwardly extending loop oi thread, The edge extends forward beyond the front wall edge constitutes a retainer to retain the thread in the threa passage E. The loop retainer is above t e eye, and no part of it is located beyond said eye outwardly. The shoulder T, (which in the illustrated embodiment of the invention is constituted by a ortion'of the wooden bod of the shuttle has three facesor walls a, e. The upper face 0, is horizontal and it is located below the point f, of the beak and above the heel b of the beak, as shown in Fig. 7. The wall 11, is substantially vertical and extends transversely of the threading assage and at the outer end thereof. Its orward edge extends vertically substantially in the vertical transverse plane which intersects the lowest point of the heel b, as shown in Fig. 3, with the result that the said surface 11 is outside of the eye. The third wall e, is vertical and extends lengthwise of the shuttle and forward of the middle longitudinal axis of the threading passage, and forward of the front wall of said passage, as shown in Fig. 5. This longitudinal wall e, is at the rear of the rear face of the beak F, so that a narrow slit 9 is left for the entrance of the thread between said longitudinal surface e, and the beak. The two walls of this slit are thus constituted by said longitudinal wall e, and by the beak F. The thread is readily guided into this slit but the nar rowness thereof makes it diflicult for the thread to escape after it has once entered the eye.

The thread deflector S, is constituted by a block of hard metal which fits between the side walls C" and D of the threader. This thread deflector is held in place by the bolt J, which extends through a hole It, in the deflector and by a forwardly projecting nose 2', which enters an aperture 7', in the front wall 0, of the threader. By reason of this nose 2', fitting in the aperture 7', it becomes impossible for an entering thread to get caught between the upper edge of the deflector and the wall C. The upwardly projecting front side is, of the deflector maintains the thread in the thread passage E, back of the longitudinal surface e, of the shoulder T, and hence back of the slit g. Accordingly, in the case of a forward jump of the thread the deflector causes it to impinge against the transverse wall d, of the shoulder instead of jumping into the slit. The lower portion Z, of the deflector constitutes the floor of the threading passage upon which the thread \runs. The outer end of the deflector terminates inside of the eye so that the thread in passing from the threading passage to the eye reeves around the outer end of the deflector. The deflector being of hard metal does not wear readily under the action of the thread. The

,tending forwardly beyond the deflector fills the space between the walls 0, and D, thus maintaining said walls 1. An automatically threading shuttle I having, in combination, a sheet metalthreader with separated side walls, one of said walls having a hole, and a thread deflector fitting between said walls to hold fillim apart and having a nose entering said 2. An automatically threading shuttle having, in combination, a threading passage; a beak at the eye or front side of t e threading passage extending outwardl beyond and overhanging the slotted eye 0 the shuttle; a thread guard at the inner end of the threading passage; and an outer guard at the outer portion of said threading sage extending from the rear of the t reading passage and overhanging the point of the beak, said guard having a oop retainer at its inner end extending abruptly across and over the threading passage and above and in line with the eye and exfront wall of the threading passage.

3. An automatically threading shuttle having, in combination, a threadin passage; 9. beak at the eye or front si e of the threading passage extending outwardly beyond and overhanging the slotted eye of the shuttle;

pas-

a thread guard .at l

the inner end of the threading passage; and an outer ard at the outer ortion of said threa g passage extendin from the rear of the threading passage and overhanging the point of the beak, said guard having)a loop retainer atits inner end extending a ruptly across and over the threadin passage and extending forwardly beyond t e front wall of the threading passage. I

4. An automatically threading shuttle having, in combination, a threading assage; a slotted eye; a thread guard at t e inner end of the threading passage; and an outer guard at the outer portion of said threading passage extending from the rear of the threading passage and overhanging said passage, said guard having a loop retainer at its inner end extending abruptly across and over the threading passage and extending forwardly beyond the front wallv of the threading passage.

5. An automatically threading shuttle from the threading passage to the eye durin the threading operation, said transverse we 1 being at the outer end of the threading passage and at the heel of the beak, and said upper face being located in a plane below the point of the beak and above the heel of the beak.

6. An automatically threading shuttle having, in combination, a threading passage; a beak at the eye or front side of the threading passage overhanging the slotted eye of the shuttle; an outer guard extending from the rear of the threading passage and overhanging the point of the beak, and a narrow thread slit back of the beak and forward of the front wall of the threading passage, and in communication at its inner end with said passage.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

EDWARD S. STIMPSON.

Witnesses:

G. H. WILLARD, DANA Osooon. 

